NPCBots: Do not error on spline validation if bot speed evaluates to …

…zero

(cherry picked from commit 78dcd83d64c24d2ab4a639eb11e93daa2d211301)

src/server/game/Movement/Spline/MoveSplineInit.cpp

@@ -119,7 +119,7 @@ namespace Movement
             args.velocity = unit->GetSpeed(SelectSpeedType(moveFlagsForSpeed));
 
             //npcbot: do not emit an error if unit cannot move at all
-            if (!unit->CanFreeMove() && !(args.velocity > 0.01f))
+            if ((unit->IsNPCBotOrPet() || !unit->CanFreeMove()) && !(args.velocity > 0.01f))
                 return 0;
             //end npcbot
         }